scholarly journals Quasi-Solid-State Polymer Electrolytes Based on a Polymeric Ionic Liquid with High Ionic Conductivity and Enhanced Stability

2017 ◽  
Vol 8 (3) ◽  
pp. 257-264 ◽  
Author(s):  
Nawon Jeon ◽  
Sung-Geun Jo ◽  
Sang-Hyung Kim ◽  
Myung-Soo Park ◽  
Dong-Won Kim
Keyword(s):  
Ionic Liquid ◽  
Solid State ◽  
Ionic Conductivity ◽  
Polymer Electrolytes ◽  
High Ionic Conductivity ◽  
Polymeric Ionic Liquid ◽  
Enhanced Stability

scholarly journals In Situ Preparation of Crosslinked Polymer Electrolytes for Lithium Ion Batteries: A Comparison of Monomer Systems

Polymers ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1707
Author(s):  
Eike T. Röchow ◽  
Matthias Coeler ◽  
Doris Pospiech ◽  
Oliver Kobsch ◽  
Elizaveta Mechtaeva ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Solid State ◽  
Ionic Conductivity ◽  
Lithium Ion Batteries ◽  
Polymer Electrolytes ◽  
Polymer Networks ◽  
Lithium Ion ◽  
Solid Polymer Electrolytes ◽  
Free Standing

Solid polymer electrolytes for bipolar lithium ion batteries requiring electrochemical stability of 4.5 V vs. Li/Li+ are presented. Thus, imidazolium-containing poly(ionic liquid) (PIL) networks were prepared by crosslinking UV-photopolymerization in an in situ approach (i.e., to allow preparation directly on the electrodes used). The crosslinks in the network improve the mechanical stability of the samples, as indicated by the free-standing nature of the materials and temperature-dependent rheology measurements. The averaged mesh size calculated from rheologoical measurements varied between 1.66 nm with 10 mol% crosslinker and 4.35 nm without crosslinker. The chemical structure of the ionic liquid (IL) monomers in the network was varied to achieve the highest possible ionic conductivity. The systematic variation in three series with a number of new IL monomers offers a direct comparison of samples obtained under comparable conditions. The ionic conductivity of generation II and III PIL networks was improved by three orders of magnitude, to the range of 7.1 × 10−6 S·cm−1 at 20 °C and 2.3 × 10−4 S·cm−1 at 80 °C, compared to known poly(vinylimidazolium·TFSI) materials (generation I). The transition from linear homopolymers to networks reduces the ionic conductivity by about one order of magnitude, but allows free-standing films instead of sticky materials. The PIL networks have a much higher voltage stability than PEO with the same amount and type of conducting salt, lithium bis(trifluoromethane sulfonyl)imide (LiTFSI). GII-PIL networks are electrochemically stable up to a potential of 4.7 V vs. Li/Li+, which is crucial for a potential application as a solid electrolyte. Cycling (cyclovoltammetry and lithium plating-stripping) experiments revealed that it is possible to conduct lithium ions through the GII-polymer networks at low currents. We concluded that the synthesized PIL networks represent suitable candidates for solid-state electrolytes in lithium ion batteries or solid-state batteries.

scholarly journals High ion-conducting solid polymer electrolytes based on blending hybrids derived from monoamine and diamine polyethers for lithium solid-state batteries

RSC Advances ◽  
2017 ◽  
Vol 7 (33) ◽  
pp. 20373-20383 ◽  
Author(s):  
Ta-Ming Liu ◽  
Diganta Saikia ◽  
Sze-Yuan Ho ◽  
Ming-Chou Chen ◽  
Hsien-Ming Kao
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
Polymer Electrolyte ◽  
Polymer Electrolytes ◽  
Solid Polymer Electrolyte ◽  
Solid Polymer Electrolytes ◽  
High Ionic Conductivity ◽  
Solid Polymer ◽  
Solid State Batteries ◽  
Ion Conducting

The blended hybrid solid polymer electrolyte possessed a high ionic conductivity value of 1.2 × 10−4 S cm−1 at 30 °C.

Poly(ionic liquid)-based polymer composites as high-performance solid-state electrolytes: benefiting from nanophase separation and alternating polymer architecture

2020 ◽  
Vol 56 (57) ◽  
pp. 7929-7932
Author(s):  
Meng Zhang ◽  
Quan Zuo ◽  
Lei Wang ◽  
Songrui Yu ◽  
Yiyong Mai ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Solid State ◽  
Ionic Conductivity ◽  
Mechanical Strength ◽  
Polymer Composites ◽  
Polymer Electrolytes ◽  
High Performance ◽  
High Mechanical Strength ◽  
Poly Ionic Liquid ◽  
Nanophase Separation

Solid-state polymer electrolytes with remarkably high ionic conductivity and high mechanical strength are achieved via nanophase separation.

scholarly journals Ternary polymer electrolytes incorporating pyrrolidinium-imide ionic liquids

RSC Advances ◽  
2015 ◽  
Vol 5 (18) ◽  
pp. 13598-13606 ◽  
Author(s):  
Henrik de Vries ◽  
Sangsik Jeong ◽  
Stefano Passerini
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Ionic Conductivity ◽  
Polymer Electrolytes ◽  
High Ionic Conductivity ◽  
Ternary Polymer

Amorphous PEO-ionic liquid–LiX polymer electrolytes containing mixed imide anions exhibit high ionic conductivity and lithium plating–stripping capability at moderate temperatures.

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